Clean default env_whitelist
Clean default env_whitelist

The whitelist of environment variables we pass to service scripts
included several unnecessary variables.

The default whitelist now includes EERROR_QUIET, EINFO_QUIET,
IN_BACKGROUND and IN_HOTPLUG.

X-Gentoo-Bug: 569542
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=569542

williamh/openrc,OpenRC/openrc,williamh/openrc,OpenRC/openrc,OpenRC/openrc,dwfreed/openrc,dwfreed/openrc,williamh/openrc,dwfreed/openrc